Strict regex routing
I've been experimenting with Sinatra lately and have had some "problems" with regex routing ... For example,
get "/something/" do
status 400
end
matches /something
, but neither /something/
, nor /somethingelse
. Nevertheless,
get %r{/something/([0-9]{3})} do |number|
status number
end
matches /something/201
, but also /something/201/
, and something/201-and-somethingelse
. Maybe I should rewrite the regex to read it %r{/something/([0-9]+)$}
, but it doesn't make sense for me to include the dollar sign since that capture has to be strict, right? Or am I missing something?
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Sinata follows the usual Ruby regex rules. From an IRB session:
pattern = %r{/something/([0-9]{3})}
=> something[0-9]{3}
pattern.match "/something/201"
=> #<MatchData "/something/201" 1:"201">
pattern.match "/something/201/"
=> #<MatchData "/something/201" 1:"201">
pattern.match "something/201-and-somethingelse"
=> nil
pattern.match "/something/201-and-somethingelse"
=> #<MatchData "/something/201" 1:"201">
(this accounts for the typo described above).
Another example get "/something/" do
is a string, not a regex, but some patterns can be included as a convenience, for example. ?
... Therefore:
get "/something/" do # will match "/something/" but not "/something"
get "/something" do # will match "/something" but not "/something/"
get "/something/?" do # will match "/something" and "/something/"
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